Is AD 2017-26572 a recurring Airworthiness Directive?

No — AD 2017-26572 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2017-26572 apply to?

AD 2017-26572 applies to Rolls-Royce Plc — models RB211-535E4-37, RB211-535E4-B-37, RB211-535E4-C-37, RB211-535E4. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2017-26572

one-time

AD 2017-26572 · 2017-12-11 · turbine engine

Airworthiness Directives; Rolls-Royce plc Turbofan Engines

What this AD requires

We are superseding airworthiness directive (AD) 2014-24-08 for all Rolls-Royce plc (RR) RB211-535E4-37, RB211-535E4-B-37, and RB211- 535E4-C-37 turbofan engines with certain low-pressure (LP) fuel filter- to-high-pressure (HP) fuel pump tube assemblies, or HP fuel pump-to- fuel flow governor (FFG) or FFG-to-HP pump inlet overspill return tube assemblies and flanged adaptor, installed. AD 2014-24-08 required replacing certain LP fuel filter-to-HP fuel pump tube assemblies. This AD retains the requirement in AD 2014-24-08 to remove the LP fuel filter-to-HP fuel pump tube, adds new compliance thresholds, and requires installation of new HP fuel pump-to-FFG and FFG-to-HP pump inlet overspill return tube assemblies and flanged adaptor. This AD was prompted by fuel leaks that have occurred at the flanged joints of the HP fuel pump-to-FFG tube assembly and FFG-to-HP pump inlet overspill return tube assembly. We are issuing this AD to correct the unsafe condition on these products.

Which aircraft AD 2017-26572 applies to

MakesRolls-Royce Plc

ModelsRB211-535E4-37, RB211-535E4-B-37, RB211-535E4-C-37, RB211-535E4

Part-conditional — UL16692, AE709623-1, 163521538, 163521545, UL16691, UL37214, UL16690, UL37213.

Applies only if one of the following is installed: LP fuel filter-to-HP fuel pump tube assembly (P/N UL16692, AE709623-1, 163521538, or 163521545); HP fuel pump-to-fuel flow governor (FFG) tube (P/N UL16691 or UL37214); FFG-to-HP pump inlet overspill return tube assembly (P/N UL16690 or UL37213); or flanged adaptor (P/N UL37218).

Whether AD 2017-26572 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

Supersession

Supersedes AD 2014-24-08.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2017-26572 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.